<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >pg_event_trigger</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.6.19 Documentation" HREF="index.html"><LINK REL="UP" TITLE="System Catalogs" HREF="catalogs.html"><LINK REL="PREVIOUS" TITLE="pg_enum" HREF="catalog-pg-enum.html"><LINK REL="NEXT" TITLE="pg_extension" HREF="catalog-pg-extension.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2020-09-02T07:27:19"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="4" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.6.19 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="pg_enum" HREF="catalog-pg-enum.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="catalogs.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Chapter 50. System Catalogs</TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="pg_extension" HREF="catalog-pg-extension.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="CATALOG-PG-EVENT-TRIGGER" >50.21. <TT CLASS="STRUCTNAME" >pg_event_trigger</TT ></A ></H1 ><P > The catalog <TT CLASS="STRUCTNAME" >pg_event_trigger</TT > stores event triggers. See <A HREF="event-triggers.html" >Chapter 38</A > for more information. </P ><DIV CLASS="TABLE" ><A NAME="AEN107598" ></A ><P ><B >Table 50-21. <TT CLASS="STRUCTNAME" >pg_event_trigger</TT > Columns</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Type</TH ><TH >References</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="STRUCTFIELD" >evtname</TT ></TD ><TD ><TT CLASS="TYPE" >name</TT ></TD ><TD > </TD ><TD >Trigger name (must be unique)</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >evtevent</TT ></TD ><TD ><TT CLASS="TYPE" >name</TT ></TD ><TD > </TD ><TD >Identifies the event for which this trigger fires</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >evtowner</TT ></TD ><TD ><TT CLASS="TYPE" >oid</TT ></TD ><TD ><TT CLASS="LITERAL" ><A HREF="catalog-pg-authid.html" ><TT CLASS="STRUCTNAME" >pg_authid</TT ></A >.oid</TT ></TD ><TD >Owner of the event trigger</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >evtfoid</TT ></TD ><TD ><TT CLASS="TYPE" >oid</TT ></TD ><TD ><TT CLASS="LITERAL" ><A HREF="catalog-pg-proc.html" ><TT CLASS="STRUCTNAME" >pg_proc</TT ></A >.oid</TT ></TD ><TD >The function to be called</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >evtenabled</TT ></TD ><TD ><TT CLASS="TYPE" >char</TT ></TD ><TD > </TD ><TD > Controls in which <A HREF="runtime-config-client.html#GUC-SESSION-REPLICATION-ROLE" >session_replication_role</A > modes the event trigger fires. <TT CLASS="LITERAL" >O</TT > = trigger fires in <SPAN CLASS="QUOTE" >"origin"</SPAN > and <SPAN CLASS="QUOTE" >"local"</SPAN > modes, <TT CLASS="LITERAL" >D</TT > = trigger is disabled, <TT CLASS="LITERAL" >R</TT > = trigger fires in <SPAN CLASS="QUOTE" >"replica"</SPAN > mode, <TT CLASS="LITERAL" >A</TT > = trigger fires always. </TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >evttags</TT ></TD ><TD ><TT CLASS="TYPE" >text[]</TT ></TD ><TD > </TD ><TD > Command tags for which this trigger will fire. If NULL, the firing of this trigger is not restricted on the basis of the command tag. </TD ></TR ></TBODY ></TABLE ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="catalog-pg-enum.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="catalog-pg-extension.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><TT CLASS="STRUCTNAME" >pg_enum</TT ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="catalogs.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><TT CLASS="STRUCTNAME" >pg_extension</TT ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >